Rotary cylinder motor



Feb. 26, 11924.; 11,484,%@

c. H. PECK ROTARY CYLINDER MOTOR Filed July 28. 1921 4 Sheets-Sheet lINVENTOR BY r HIS ATTORN Y Feb. 26, 11924};

C. H. PECK ROTARY CYLINDER MOTOR Filed July 28 1921 4 Sheets-Sheet 2 HE)ATTORNEY Feb. 26, 192% 1,4843% c. H. PECK ROTARY CYLINDER MOTOR FiledJuly 28. 1921. 4 Sheets-Sheet 3 INVENTOR @wdfifimk.

HIS ATTO Feb. 26 192%.;

C. H. PECK ROTARY CYLINDER MOTOR Filed July 28 1921 4 Sheets-Sheet 4INVENTOR ms ATTOR EY mar CMD H.

PECK, or wavnnnr, YORK, assienoa roinea'asotn-a'anncomror JERSEY 'crry,NEW JERSEY, A coarona r onor New JERSEY.

no'mnr CYLINDER moron.

Application filed July 23; 1921. serial no. 488,062.

To all whom it may concern:

Be'it known that I, CAIU H. PECK, a citi zen of the United States, aresident of Waver1y, county of Tioga, Stateof New York,;

have lnvented. acertain Rotary Cylinder Motor,of which thefollowing is aspecifica-' tion. a

f This invention relates to'rotary' fluid actuat'ed cylinder-motors ofthe type in which the .rotary driving member is'in the form of aplurality of rigidly connected angu 'larly dis osed' cylinders bodilyrotatable as a unit a out a center and 'operatively con'v it may receivelittle or no cleaning, oi1ing or other attention, unless reached by'aladder or lowered to the floor,

The objects of the present invention are to produce a simple, cheap,light, yet strong and rugged, and powerful motor which will withstandconstant use without getting out of order under the unfavorableconditions to which such motors are ordinarily subjected.

The motor is shown in its preferred form in the accompanying drawin s inwhich- Figure 1 is a longitudina sectional ele-' vation throu h themotor on the line 11 of Figure 2 ooking in the direction-of the arrows,with the driven shaft broken away. This particular motor was intendedfor a hoist and a portion of the hoist casing is also shown broken away.

Figure 2 is a transverse vertical sectional view on the line 22 ofFigure 1 looking in the direction of the arrows, with a set of yokeswhich would otherwise be hidden indicated in dotted lines in order toindicate driven shaft P extending'thr-ough the cover the relation of theFigure 3 isan en of the motor with the case or frame broken away to showthe motor and the driven (yokes and pistons,

shaft in transverse section on the line 33, of Figure 1 looking in thedirection of thearrows,

Figure 4; is an end view of the opposite Such rotary view of the drivenendend of the motor partly in transverse section on the line 44 ofFigure 1,

- Figure 5'is a detail transverse sectional view taken'through thecontrolling valve on the line 5 5 of Figure 1, and

Figure 6'is a'detail longitudinal sectional plan view through thecontrolling valve with the valve in a different position.

vReferring to the drawings the enclosin case A having the cover plate. Bsecured .thereto as by means of the cap screws 0.

forms the frame of the motor. A portion of a frame D held by the screwsC is shown in Figure -1 which may form the frame of a hoisting drum orother suitable part to be operated by the motor.

The rotary driving member consists of a plurality of rigidly connectedangularly disposed cylinders, in this instance three cylinders E,F and Gbeing shown for purposes ofillustration, it being understood that asmany cylinders may be provided as desired. The cylinders are in thisinstance construct: ed as integral arts of 'a suitable circular cylindercasing which connects and braces the cylinders and is preferably hollowwith openings J in its periphery for lightness;

Such a construction is light and strong and I may conveniently be castor otherwise constructed in one piece.

In this instance the longitudinal axes of the cylinders are shown lyingon chords of the circle formed by the cylindrical casing, rather than onradii ofthe circle, so that these axes are preferabl ofl'set from thecenter of the driving member to produce the. I

requisite levera e and reduce the side pres-' sure on the cylinder wallsas will appear,

although the cylinders may be radial if desired.

The circular cylinder casing H is mounted to rotate about the hollowstationary shaft L suitably supported in the case A, at one side of thecase; and extending into a rotary sleeve 0 keyed to the cylinder casingtoxrotate therewith, and suitably connected to rotate a driven member asthe plate B.

The walls of the cylinders E, F and G are preferably slottedlongitudinally at opposite sides at their outer portions for a. portionof their length as indicated at Q through which extend the wrist pins Rof the p)1stons S, and spacing sleeves T are prefe'ra ly WES wrist pin.

' Z may be in the form of a sleeve-rotatable provided over the wristpins. Stationary eccentrics U and V are mounted at each side of thecylinder casing H in any suitable manner and in this instance theeccentric U formed as a part of, the sta-,

I and j, are revolubly mounted side by side on the eccentrics U and Vrespectively and ball bearings 9 consisting of cages and balls as' shownare preferably interposed between the yokes and the eccentrics. Theyokes are connected inpairs to the projecting ends of thepiston wristpins R in any suitablemanner. As shown in this instance, the inner andouter yokes c and f forming one pair are connected to the wrist pin R ofone piston, one end h of the wrist pin being reduced and entering anaperture in the end of the yoke f, and a nut j securesthe yoke c to theother screw threaded end of the The inner and outer yokes d and aforming another pair are adapted to be connected to another wrist pinand the intermediate yokes b and e are adapted to be connected to theremaining wrist pin or pins depending upon the number of cylinders andpistons, it being understood that there are twice as' many yokes ascylinders.

Suitable means are provided for automatically supplying and distributingmotive fluid to the cylinders, and as shown fluid under pressure,as-compressed air may be supplied and exhausted through the hollowstationary shaft L from the supply connection Y. Theshaft L is providedwith two longitudinal passageways la and 0 opening outwardly through theports p and g atthe center of the machine, which are controlled by therotating valve sleeve O having the ports 1', so that motivefluid issuccessively admitted to and exhausted fromthe cylinders as the cylindercasing and valve sleeve 0 rotate together. A suitable throttle valve Zis provided for controlling the supply of fluid from thesupplyconnection. Y and for reversing the motor. This throttle valveupon the reduced and preferably tapered end 8 of the stationary shaft L'forming a seat and operated by means of the. arms t and u to which ropesor chains may be connected in the usual manner. The ends 'v of aretracting spring w coiled'about the collar m engage the arms a andserve to center the throttle valve so that it may be rocked in eitherdirection for distributing motive fluid to' the motor for: rotation inone direction or the other. The throttle 1 aeaeeo valve. sleeve Z isformed with the chambers 2 and 3 and the exhaust-ports F1 and 5 and thevalve seat 8 is provided with the inlet passage 6, commumcating with theradial ports and 8, and also with the radial ports 9 and 10communicating with the longi-- tudina'l passages 0 and k in the shaft L.By rocking the throttle valve sleeve Z, motive fluid is admitted fromthe supply passage 6 through a chamber 2 or 3to one of the passages isor 0, the other of which passages forms an exhaust passage to theatmosphere through anatmospheric port 4 or 5. In Figure 6 the valve Zhas been turned to admit fluid from passage 6, through cham-' her 2, tothe passage 0, and from thence to the motor at the central rotary valvesleeve 0. Fluid is exhausted back through the passage is, to the exhaustports 10 and 5.

In the operation of the apparatus, let it be assumed that the motor isrotating in the direction indicated by the arrows, or clock-wise asFigures 2 and 3 are viewed. In Figure 2 the piston of the upper cylinderE isabout to start on its outward power stroke and motive fluid is aboutto be admitted to the cylinder as indicated by the position of the valvesleeve 0. The piston of'the left hand cylinder F is on its inward strokeand the cylinder is exhausting through the passage "0. The piston of theright hand cylinder G has not yet reached its'outward position and airis still being 7 supplied to the cylinder through the'passagc .k. Thereciprocations of the pistons in the cylinders as will be apparent causethe cylinder casing to revolve at high speed due to the eccentricity ofthe stationary eccentrics about which the yokes revolve. By turning thethrottle Z to the reverse position as de scribed, the motor will bereversed.

I claim: j

1. A rotary fluid actuated cylinder motor comprising a case or frame, astationary hollow shaft supported in said case, a rotary sleeve on saidshaft, arotary driving member in the'form of a cylinder casing bodilyrevoluble with said sleeve on said shaft and provided with a pluralityof angularly disposed cylinders, the outer ends of the walls of thecylinders being longitudinally slotted at opposite sides for a portionof their length, pistons adapted to reciprocate in said cylinders, wristpins carried by said pistons and projecting laterally through the slotsin the cylinder walls, stationary eccentrics located within the case orframe at each side of the cylinder casing, one eccentric being formed onthe stationary hollow shaft, the rotary sleeve extending through theother eccentric, a plurality of yokes revolubly mounted side by side oneach eccentric, there being double the number of yokes for a givennumber of cylinders,-pairs of yokes being connected to the projectinginsaeeo ends of the said wrist pins at each side of the cylinders, adriven shaft extending outwardly from the case or frame in alignmentwith the said stationary shaft and connected through the'agency of saidrotary sleeve to be rotated by the rotary cylinder casing, and meansoperated and controlled by the rotation of the cylinder casing and saidrotary sleeve for automatically distributing motive fluid to saidcylinders.

2. A rotary fluid actuated cylinder motor comprising a case or frame, astationary hollow shaft supported in said case, a rotary sleeve on saidshaft, a rotary driving member in the form of a cylinder casing bodilyrevoluble with said sleeve on said hollow shaft and provided With aplurality of angularly disposed cylinders, the outer ends of the Wallsof the cylinders being longitudinally slotted at opposite sides for aportion of their length, pistons adapted to reciprocate in saidcylinders, wrist pins carried by said pistons and projecting laterallythrough the slots in the cylinder walls, stationary eccentrics locatedwithin the case or frame at each side of the cylinder casing, oneeccentric being formed on the stationary hollow shaft, the said rotarysleeve extending through the other ecentric, a plurality of ballbearings side by side on each eccentric, a plurality of yokes revolubleon said ball bearings, there being double the number of yokes for agiven number of cylinders, pairs of yokes being conected to theprojecting ends of the said wrist pins at each side of the cylinders, adriven shaft extending outwardly from the case or frame in alignmentwith the said stationary shaft and connected through the agency of saidrotary sleeve to be rotated by the rotary cylinder casing, and meansoperated and controlled by the rotation of the cylinder casing and saidrotary sleeve for automatically distributing motive fluid to saidcylinders.

3. A rotary fluid actuated cylinder motor comprising a case or frame, astationary hollow shaft supported in said case and provided with portsand passages for the distribution of motive fluid to the motor, a rotarysleeve on said shaft, a rotary driving member in the form of a pluralityof rigidly connected angularly disposed cylinders bodily revoluble withsaid sleeve on said hollow shaft, the Walls of the cylinders beinglongitudinally slotted at opposite sides for a portion of their length,pistons adapted to reciprocate in said cylinders, piston wrist pinsprojecting laterally through said slots in the cylinder Walls,stationary eccentrics mounted at each side of the driving member withinthe case, one eccentric being formed on the stationary hollow shaft, thesaid rotary sleeve extending through the other eccentric, a plurality ofyokes revoluble on each eccentric, pairs of yokes being connected to theprojecting ends of the Wrist pins at each side of the cylinders, adriven member connected through the agency of said rotary sleeve to berotated by the driving member, said rotary sleeve over the stationaryshaft being rotated by the driving member and having ports cooperatingwith the distribution ports in said shaft for automatically supplyingmotive fluid to and exhausting fluid from said cylinders.

In testimony whereof I have signed this specification.

GAID H. PECK.

